Electric fan.



N0- 829,3l9. PATENTED AUG. 21, 1906. H. D. CESSNA.

ELECTRIC FAN.

APPLIOATION FILED APB.27.1905.

2 SHEETS-SHEET 1.

- "Tam/Em L'VITNESSES."

No. 829,319. PATENTED AUG. 21, 1906.

H. D. CESSNA.

ELECTRIC FAN.

APPLICATION FILED APR.27.1905.

2 SHEETS-SHEET 2.

INVENTOR JidrrgzZZ L/HSJIZQ ATTORNEYS UNITED, STATES PATENT clerics.

HARRY D. CESSNA, OF SAN FRANCISCO, CALIFORNIA.

' ELECTRIC FAN. I

Specification of Letters Patent.-

- Patented Aug. 21, 19.06.

Application filed Apri127, 1905. Serial No. 257,619.

To all whom it may concern:

Be it known that I, HARRY D. CESSNA, a citizen "of the United States, and a resident of San Francisco, in the county of San Francisco and State of California, have invented a new and Improved Electric Fan, of which the following is a full, clear, and exact description.

My invention relates to fans, my more particular object being to roduce a type of fan driven by a motor an bodily from one point to tion.

My invention also relates to certain constructional details -for improving the elliciency of the fan and for enabling it to be another while in acmoved automaticallv; as hereinafter de-.

scribed, and pointed .t in the claims.

Reference is to be had to the accom any ing drawings, formin a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures. Figure 1 is a horizontal section through the carriage upon which therevoluble' fan members are mounted and also containing the electric motor. mchanismand related parts for actuating and controlling the fan members, the section being taken uponthe line 1"1"of Fig. 4 looking in the direction of the arrow. 7 Fig. 2 is avertical cross-section through the aforesaid carriage, showing the track mechanism and the trolley mechanism, together with the mountings for the motor and also the mountings for some of the fan members, the section bein taken upon the line 2 2 of Fig. 4 looking inthe direction of the arrow. Fig. 3 is a vertical crosssection through the carriage and is taken upon the linc 3 3 of .Fig. 4 looking in the direction of the arrow and showing the clutch mechanism for reversing the direction of travel of the carriage and also showing the means for operating this clutch mechanism. Fig. 4 is a reduced side elevation of the track, showing the carriage as depending therefrom and also showing the means for suspending the trackfrom the ceiling which appears in section; and Fig. 5 is' a diagram of the wiring. a

,The ceiling is shown at 5, and depending from it, preferably upon opposite sides of the room, are brackets 6 7. From one of these brackets to the other a line 8 is suspended, as

indicated in Fig. 4. Suspender-straps 9 are each provided with an eye 10, which encirclos the line 8, and mounted upon the suspcndcr-straps 9 is a track 1, provided at one ofits ends with acam-plate 11 this'pl'ate capable of shifting 35, and bolted rigidly to these lugs are sup being upon one side only of the track, and

upon the opposite side (but at the other end) of the track is another cam-plate 11*, as indipin '14. Metallic plates 16 17 are provided with upwardly-projecting flanges 15, which are su ported by the several pins 14, passing theret lrough, as indicated in Fig. 2. The" plates 16 17 are bent u wardly at 18 19, so as to constitute track-rai s and are held in posi tion by screws 20 21. .l.rolley-conductors 22 23, insulated by means of an asbestos o'r fiber plate 24, are mountedu side of the rail 11, as indicatec on the under; in Fig.2. AL" carriage 25 is provided with an upwardlyprojecting neck 26 of considerable size and is '75 of the several -working parts. Connected j provided for the protection and'eoncealment rigidly with the carriage 25 are bearing sleeves 27 28, supporting bevel-"gears" 29 30,, mounted, respectively, upon revolnble shafts these shafts being provided with ,fan. 8';- members 33 34. The bearing-sleeves J1 28 are providedwith upwardly-projecting lugs porting-strips 36, which are secured rigid y to the electric motor 37 and support the same within the carriage.

Mounted rigidly u on the motor 37 and extending upwardly t erefrom are standards 38 39, and revolubly mounted upon'the u per ends of these standards are track-whee s 40 41, which rest upon the rails 18 19 of the track 11 and partially support the carriage. Bearing-sleeves 42 are connected rigidly with the motor and su port'a fan member 43, which, together wit a bevel-gear 44, is rigidly mounted upon a shaft 45, and therefore free to turn therewith. Another fan me1nber43 is mounted upon the shaft 45 directly op iosite the fan member 43, as indicated in ig 1., Projecting obliquely upward from the motor 37 are trolle s 46 47, each rovided with .a trolley-whee 46 47, as indicated in Fig. 2. with the respective trolleyconductors 22 23, which may be regarded as miniature third rails and are employed for the purpose of The trolley-wheels make contact supplying current to the electric motor 37, as

hereinafter described.

At the right of the carriage, according to the view shown in Fig. 3. a pair of trackwheels 48 49 are respectively provided with bevehgears 50 51, prei'erahl integral therewith, as shown. Each bevel gear is revoluand encircles the shaft 45.

"the lam .current passes through the lamp 70.

bly mounted upon a stub-shaft 52, supported by a sleeve 53 and projecting laterally there' from, there being two of these sleeves, as indicated in Fig. 3. The bevel-gears 5O 51 are in mesh with and actuated b ,two other bevelgears 54 55, and the beve -gears last mentioned are provided with clutch members 56 57, having preferably the form of annular beads integral therewith. Clutch members 58 59, mating the clutch members 56 57 are splined upon shafts 72 73 and are connectedby forks 60 61 with a single rocking beam 62, which is 'ournaled at 63 and is provided with I-bofts 64 65. Connected with the 1- bolts 64 65 and. depending therefrom are pull-cords 66 67, which pass through apertures 68 69 in the carriage 25, so as to be pulled by hand for the purpose of rocking the cam .62 in either of two directions, as desired. An electric lamp 70 is provided with a handle 71, whereby it maybe lighted or extinguished at will. Two vertical shafts 72 73 are provided, res ectively, with collars 72 73*, mounted rigid y thereupon and serving to maintain the clutch members 58 59 clear of the clutch members 56 57 when out of operative engagement therewith, as indicated at the right of Fig. 3. A T-frame 74 partially sup orts the shafts 72 73, as indicated in Bel figure. Connected with the respective shafts 72 73 are worm-gears 75 76. Frame members 77, 78, and 79 are connected with the T-frame 74 and serve to support the journal or stub-shaft 63, u on which the beam 62 rocks, as above described. A sleeve 80 is rigidly connected with the T-frame 74 A' revoluble worm 81 meshes with the worm-gears 75 76. The feed-wires are shown at 82 83, the wire 82 being provided with a switch 84 and connected with the trolley-conductor 23. The trolley-conductor 22 is connected directly with the field-wire 83. munication with the trolleys 46 47 and with 70. A switch 86 is in communicatron witi the wire 85 and with the two trolleys, so that when the switch 86 is closed ghe (r ee diagrammatic view Fig. 5.)

The operation of my device is as follows: The switch 84 being closed, the following main circuit is completed: wire 82, conductor 23, trolley-wheel 4.7, trolley 47, motor 37, trolley 46, and trolley-wheel 46 to fieldwire 83. If the switch 86 be also closed, the circuit is the same as that just described, with the exception that a portion of the. current. passes in parallel through the wire 85 and the lamp 70, causing the lighting of the lamp. The motor 37 being thus energized is started into action and co imunicates motion to the revoluble shaft 4 This causes the revolution of the fan members 33, 34, 43, and 43*. The motion of the shaft 45 causes A wire--85 is in com-' the worm 81 to rotate, and this causes the .gears 75 and 76 to rotate in op os'ite directions. These gears, actin a ternately through the shafts 72 73, beve -gears 54 55, and bevel-gears 50 51," cause the trackwheels 48 49 to rotate in a common direction. The track-wheels 48 49 thus serve as motorwheels and by their engagement with the track causes the carriage to be shifted bodily from its starting position to one end of the track. One of the camlates 11 11 is now engaged b the rocking ever 62, (see Fig. 3,) which is tl ius caused to rock; The rocking movement disconnects one of the clutch memberssa 58-fr0m its mate 56 and causes the other-way 59to make engagement with its mate 57. The direction of rotation of the shaft 45 and the motion of the gear is never reversed; but the enga ement and disengagement of the clutch mem ers as just described causes one of the bevel-gcars say 57to run idle, and the othersay 55 to act as a driving member. One of the bevel-gears is always idle, as onl one track wheel is driven for each direction of movement of the carriage. The result is that when the carriage reaches one end of the track it reverses and travels back to the opposite end of the track, where the other camsay' 11"-again actuates the rocking lever 62, thereby causing the engagement and disengagement of the clutch members 58 59 with their respective mates 56 57, so as to start the track-wheels 48 49 to turn in a contrary direction. .This of course causes the carriage to travel in the opposite direction, this motion being kept up indefinitel The net result is that the carriage trave s back, and

forth incessantly, and while the fans are always in action and each turns in its own peculiar direction the shifting of the carriageenables the fans to send air-currents in such directions as to prevent the formation of drafts. 3

Having thus described 'my inv ntion, I claim as new and desire to secure b Letters Patent 1. The combination of a traveling carriage, fan mechanism mounted thereupon, an electric motor mounted upon. said carriage for propelling said'fan mechanism, trolleys for feeding an electric curre'nt'to said electric motor, track-wheels connected with said carriage for supporting the same, mechanism for connecting said track-wheels with said electric motor, and manually-operated mechanism for reversing the direction of said track-wheels relatively to said electric mdtor.

2. The combination of a carria e, motor mechanism mounted thereupon, a an member connected with said motor mechanism and actuated thereby, the movement of said fan being always in the same direction, gearing' connected with said motor mechanism,

, track-wheels connected with said gearing for same, motor-Wheels mounted upon said can the purpose of propelling said carriage bodily along said track, and means controllable at will for reversing the direction of rotation of the traokwheels.

3. The combination of a track, a carriage mounted thereupon and provided with. 1110* tor-Wheels engaging said track, motor mea 4 anism mounted upon said carriage and ada ted to cause said niotonwheels to turn for the purpose of propelling;v said carriage, a revoluble fan connected with said motor mechanism and driven directly thereby, and means for reversing the direction of rotation of said motor-Wheels Without afiecti the direction of rotation of said revoliible tan.

The combination of a track, a carria e provided with Wheels engaging said traoit, said carriage being adapted to travel bodily in relation to said track, a fan member mounted upon said carriage and adapted to turn, mechanism common to said Wheels and said tan member for propelling the same, and separate clutches operated automatically by the uiovmncnts (it said carriage for reversing the direction of trzwel thereof.

5. The combination of a carriage, an electric motor mounted thereupon, a revoluble fan mounted upon said carriage and adapted to be actuated by said motor, a revoluble shaft for connecting said motor with saidf'an, a worm mounted upon said shaft, worm- QIHELTS meshing Withsaid Worm and driven thereby, shafts ool'mocted with said Wormgears and actuated by movements of the riage for supporting the same and adapted to I be actuated alternately,

ch: ch members con--- meeting said. motonwheels with said revolt ble shafts and adapted to act alternately so that only one of said motor-Wheels its driven at a time, a track for supporting said motor- Wheels, and means for actuating clutches.

6. The combination of a track, a c rriage provided with Wheels and adapted to run upon said track, electric motor mechanism mounted upon said carriage and adapted to turn said Wheels, a lurality of trolley-condubtors disposed on erneath said track and supported thereby, a plurality of trolleys engaging said trolley-conduetors, and connected with said electric motor mech tnism for enorgizin the same, and a tan connected. with sai i motor mechanism and actuated tl'ieroby.

"7. 'lhe combination of a track, carriage provided with wluiels and mounted to run thereupon, motor nirsjrhanism mounted upon said carriage for propelling Wheels, gea ing connecting said motor mechanism with said wheels, clutch mechanism mounted upon said carriage and adapted to reverse the direction of rotation. of said whee-ls, and cam-plates mounted at opposite ends of said track for actuating said clutch n'iochanisni.

In testimony whereof l have signed my 5 name to this specification in the presence of two subscribing Wusmsses.

HAR RY D. {ESPN V, itmsses:

H. /VV Canwsnn,

Mrronntn. 

